(19)

(11)

EP 1 831 483 A2

(12)

(88) Date of publication A3: 08.02.2007 (43) Date of publication: 12.09.2007 Bulletin 2007/37 (21) Application number: 05820459.5 (22) Date of filing: 06.12.2005

(51) International Patent Classification (IPC):  E04G 21/32(2006.01) (86) International application number: PCT/GB2005/004670 (87) International publication number: WO 2006/061592 (15.06.2006 Gazette 2006/24)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 06.12.2004 GB 0426621 12.09.2005 GB 0518557 (71) Applicant: William Hare Limited Bury BL8 1JJ (GB)	(72) Inventor: SIMMONS, Gary Brandlesholme Road Bury BL8 1JJ (GB) (74) Representative: Johnson, Graham Pierssene  Appleyard Lees, 15 Clare Road Halifax HX1 2HY Halifax HX1 2HY (GB)